Although Prius drivers are often the butt of jokes here in the United States, the vehicles are still quite popular due to their lofty fuel economy numbers and "green" image. The original Prius was introduced to the United States in 2000 and is currently in its third generation. The larger Prius v was introduced late last year, while the smaller Prius c went on sale in the U.S. earlier this year.

The popularity of the Prius family of hybrids doesn't just apply to the U.S., however. Sales of the hybrids have been booming globally. According to Automotive News, the Prius is now the third best-selling nameplate in the world when it comes to the automobile sales through the first quarter of 2012 (247,230 units).

Toyota Prius v

First place goes to Prius' cheaper, older brother: the Toyota Corolla (300,800 units). In second place sits the Ford Focus (277,000 units), which was recently revamped with a host of technological improvements and new engines to boost infotainment options and fuel economy across the board.

With three different sizes of Prius available and with prices starting under $20,000, Toyota is hoping to solidify its position as a leader in hybrid vehicles.